Zach Snyder’s Man of Steel is out on June 14, and besides the usual marketing, Gillette has a new tie-in campaign asking the question of how Superman manages to shave his beard. We know he has a beard earlier in the film, according to the trailer, but obviously Superman is clean-cut, so it has to be done somehow. While this has probably been explained several ways throughout the years, Gillette got several smart people to weigh in: Bill Nye (the Science Guy), Kevin Smith (nerdy director), Mayim Bialik (The Big Bang Theory), and Adam & Jamie (Mythbusters). Whose theory sounds the best?